Extension-desk



(No Model.)

T. J. PALMER. EXTENSION DESK.

No. 575,729. Patented m. 26,11897.

7 C 4: Wuewwamd C I. I I i %@M% UNITED STATES ATnNT Grinch.

THEODORE .I. PALMER, OF IIACKENSACK, NEIV JERSEY.

EXTENSION-DESK.

SPECIFICATION forming part of Letters Patent No. 575,729, dated January26, 1897.

Application filed May 27, 1896. Serial No. 593.272. (No model.)

To all whom it may concern.

Be it known that I, THEODORE J. PALMER, of Hackensack, in the county ofBergen and State of New Jersey, have invented a new and usefulImprovement in Extension-Desks, of which the following is aspecification.

This invention is more especially intended for the desks of what areknown as musicpulpits. Its object is to provide a desk which may beextended to a width sufficient for the music-sheets of two performersplaying together, but which when used bya single performer may bebrought and kept within the width of an ordinary single desk.

I will first describe in detail with reference to the accompanyingdrawings a music-pulpit desk embodying my invention and will afterwardpoint out its novelty in claims.

Figure 1 is a perspective View of the desk, showing it closed for asingle performer. Fig. 2 is a perspective view showing the desk partlyextended. Fig. 3 is a back View showing the desk completely extended.Fig. at is a back view corresponding with Fig. 1.

Similar letters of reference designate corre sponding parts in all thefigures.

A is a desk-board like that of an ordinary music pulpit, having itslower edge constructed or provided with the usual fixed return a for thesupport of the music sheet or box.

B B are two extension-flaps so hinged, as shown at b b in Figs. 1 and 3,to the side edges of the board as to be capable of being folded flatupon the board A above the return a, as shown in Fig. 1, or of 'beingextended or spread laterally therefrom, as shown in Fig. 3.

O O are return-pieces for forming extensions or prolongations of thereturn a. These extension return-pieces are hinged, as shown at c c inall the figures, to the ends of the return a of the board A in suchmanner as to be capable of being folded closely under the return a, asshown in Figs. 1 and 4, or of being spread lengthwise and outwardtherefrom, as shown in Figs. 2 and 3.

On the backs of the return-pieces 0, near the outer ends thereof, arepivoted hooks d 01. These hooks may engage either, as shown in Fig. 3,with studs or pins 6 e on the backs of the flaps or, as shown in Fig. 4,with studs or pins f f on the back of the board A. The

engagement of the said hooks with the pins 6 6 serves to lock theextended flaps B and the extended return-pieces O 0 together and soretain the desk in its extended condition. The engagement of the saidhooks with the pins ff secures the return-pieces snugly under the returna of the board A.

I11 carrying out this invention I propose generally to make the fixedreturn a of the desk-board A with a somewhat greater projection from theface of the said board than is common, in order that when the flaps bare folded over on the board, as shown in Fig. 1, the return will havethe necessary projection beyond the said flaps for the support of themusic book or sheet. The return-pieces may be of a width to correspondwith the fixed return a.

The extension-desk constructed as above described may be supported inany suitable manner, for example, in a substantially similar way to thatin which the desks of other music-pulpits are supported. In the examplerepresented the desk-board A is rigidly attached to the stem E, which isadjustable in the pillar or standard F.

Of course the desk might be made with a folding extensionflap andfolding returnpiece at one side only, though it will generally be madewith the said flap and returnpiece on each side, as in the exampleshown.

What I claim as my invention is 1. The combination with a desk-board andan extension-flap so hinged thereto as to be capable of being spreadlaterally therefrom or of folding over the front thereof, of areturnpiece for said flap so hinged to said board as to be capable offolding under the lower edge of said board when the flap is folded andof being extended under said flap when said flap is spread,substantially as herein described.

2. The combination with a desk-board and an extension-flap so hinged toeither side thereof as to be capable of being folded thereon or of beingspread laterally therefrom, of an extension retu rn-piece hinged to saidboard to be folded under the lower edge thereof or spread lengthwisetherefrom, and a fastening for connecting said flap and return-piecetogether when both are spread, substantially as herein described.

3. The combination with a desk-board and of said board when the saidflap and returnan extension -flap so hinged to either side piece arefolded, substantially as herein de- IO thereof as to be capable of beingfolded therescribed. 011 or spread laterally therefrom, of an extenl 1 5sion return-piece hinged to the said board to HE OD PALMER be foldedunder the lower edge thereof or \Yitnesses: spread lengthwise therefrom,and a fastening FREDK. HAYNES, forconnecting said return-piece with theback M. E. FLETCHER.

